Solvent-free synthesis of new inorganic–organic hybrid solids with finely tuned manganese oxalate structures

2015 ◽  
Vol 44 (13) ◽  
pp. 5974-5977 ◽  
Author(s):  
Lindong Luan ◽  
Jing Li ◽  
Changzhen Yin ◽  
Zhien Lin ◽  
Hui Huang

Three new pcu-type manganese phosphate-oxalates were prepared under solvent-free conditions, which display nanobelt-like, sql-, and cds-type manganese oxalate skeletons, respectively.

CrystEngComm ◽  
2013 ◽  
Vol 15 (28) ◽  
pp. 5602 ◽  
Author(s):  
Chunmei Duan ◽  
Daibing Luo ◽  
Rui Shang ◽  
Zhien Lin

RSC Advances ◽  
2021 ◽  
Vol 11 (46) ◽  
pp. 28711-28715
Author(s):  
Lin Bai ◽  
Shenglong Ding ◽  
Xiaofang Ma

This work provides a highly efficient and feasible strategy for the synthesis of symmetric methylene diesters, involving the direct diesterification of various carboxylates with 1,n-dihaloalkanes under solvent-free conditions.


RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 39452-39459 ◽  
Author(s):  
Nenad Janković ◽  
Jovana Muškinja ◽  
Zoran Ratković ◽  
Zorica Bugarčić ◽  
Branislav Ranković ◽  
...  

A series of novel O-alkyl vanillidene derivatives containing Meldrum's acid scaffold under solvent-free conditions were synthesized.


2021 ◽  
Vol 18 ◽  
Author(s):  
Ali Aminkhani ◽  
Sina Sharifi

: An efficient four-component reaction to synthesize pyrrolo[2,1-a]isoquinolines from malononitrile, aromatic aldehydes, isoquinoline, and cyclohexyl isocyanide under solvent-free conditions is described. In a convenient, simple, and efficient one-pot procedure, the domino Knoevenagel-nucleophilic cycloaddition reaction affords excellent yields of products in less than 1 h.


2009 ◽  
Vol 63 (1) ◽  
Author(s):  
Viera Mazíková ◽  
Iva Sroková ◽  
Anna Ebringerová

AbstractWater-soluble, partially hydrophobized polysaccharides have become attractive due to their potential to act as polymeric surfactants. From carboxymethyl starch (CMS), water-soluble polymeric surfactants were prepared by esterification using two unconvential methods based on (A) a reaction with mixed anhydrides and (B) with methyl laureate (MELA) and methyl esters of the fatty acid complex of rape seed oil (MERO) under ‘solvent-free’ conditions. The obtained CMS derivatives were characterized by structural, surface-active and surfactant performance properties. Esterification using method B was successful in contrast to method A which yielded derivatives with a very low extent of esterification. Although the derivatives reduced the surface tension moderately, they exhibited remarkable emulsifying properties. The performance tests indicated good washing power and antiredeposition efficiency. The results suggest that suitable polymeric surfactants can be prepared by the unconventional esterification method B using both acylation agents. The preparations might substitute the expensive and invasive industrially applied conventional methods.


RSC Advances ◽  
2015 ◽  
Vol 5 (116) ◽  
pp. 95690-95694 ◽  
Author(s):  
Xinhong Zhao ◽  
Jiangbo Zhao ◽  
Xiangping Gao ◽  
Yu Zhao

Triclinic AlPO4-34 with CHA topology has been successfully synthesized under seed-assisted, solvent-free conditions.


Synlett ◽  
2019 ◽  
Vol 30 (19) ◽  
pp. 2143-2147
Author(s):  
Zhongyou Yin ◽  
Changkun Xiong ◽  
Jianxin Guo ◽  
Xiaoyun Hu ◽  
Zixing Shan ◽  
...  

Several 1,3,5-triaryl-1,5-diketones have been chemoselectively synthesized under solvent-free conditions. It was found that intramolecular weak bifurcated H-bonds interaction of aliphatic C–H group plays a decisive role in the structural arrangement of 3-(2,6-dichlorophenyl)-1,5-diphenylpentane-1,5-dione in a solid state resulting in significant impact on the corresponding bond lengths and dihedral angles.


2018 ◽  
Vol 42 (12) ◽  
pp. 604-607
Author(s):  
Loghman Firoozpour ◽  
Hoda Yahyavi ◽  
Ramona Ejtemaei ◽  
Setareh Moghimi ◽  
Alireza Foroumadi

A green and efficient method for preparing novel heterocyclic systems is established through the reaction of differently substituted benzaldehydes, barbituric acid and 4-amino-2H-chromene-2-one under solvent-free conditions. This method affords 6H-chromeno[3’,4’:5,6] pyrido[2,3-d]pyrimidine-trione derivatives in high yields and short reaction times.


2012 ◽  
Vol 9 (3) ◽  
pp. 1251-1256 ◽  
Author(s):  
Suresh Kumar ◽  
Jagdish K. Makrandi

An efficient method for the synthesis of 3-arylidenechroman-4-ones has been developed under solvent free conditions using grinding technique. Grinding of variously substituted chroman-4-ones with aromatic aldehydes in presence of anhydrous barium hydroxide at room temperature give 3-arylidenechroman-4-ones in high yield (75-92%). Products are obtained by just acidification of the reaction mixture in ice cold water. Reaction in solid state, with enhanced rate, high selectivity and manipulative simplicity are the attractive features of this environmentally benign protocol. The chroman-4-one derivatives required for the reaction have been obtained by polyphosphoric acid (PPA) catalysed cyclisation of phenoxypropanoic acids under microwave irradiations.


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